WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
#52: FILE: arch/arm/boot/dts/bcm283x-rpi-sof.dtsi:1:
+#include <dt-bindings/gpio/gpio.h>

WARNING: DT compatible string "sof,sue-creek" appears un-documented -- check ./linux-sof-driver/Documentation/devicetree/bindings/
#69: FILE: arch/arm/boot/dts/bcm283x-rpi-sof.dtsi:16:
+		compatible = "sof,sue-creek";

WARNING: DT compatible string vendor "sof" appears un-documented -- check ./linux-sof-driver/Documentation/devicetree/bindings/vendor-prefixes.txt
#69: FILE: arch/arm/boot/dts/bcm283x-rpi-sof.dtsi:16:
+		compatible = "sof,sue-creek";

WARNING: line over 80 characters
#188: FILE: sound/soc/sof/hw-spi.c:164:
+		/* the IRQ line is triggered on rising edge, then holding for 1ms */

WARNING: line over 80 characters
#224: FILE: sound/soc/sof/hw-spi.c:250:
+	dev_dbg(sdev->dev, "using IRQ %d trigger 0x%x\n", sdev->ipc_irq, irq_trigger);

CHECK: Prefer using the BIT macro
#262: FILE: sound/soc/sof/hw-spi.c:296:
+#define FW_LOAD_NO_EXEC_FLAG	(1 << 26)

WARNING: line over 80 characters
#313: FILE: sound/soc/sof/hw-spi.c:341:
+	/* Write to memory: "Setup retention delay" copied from python scripts */

WARNING: line over 80 characters
#330: FILE: sound/soc/sof/hw-spi.c:358:
+		dev_warn(sdev->dev, "%s().%d: no IRQ: %d\n", __func__, __LINE__, ret);

WARNING: line over 80 characters
#346: FILE: sound/soc/sof/hw-spi.c:374:
+				 ((sizeof(hdr->payload) + sizeof(hdr->sha256)) / sizeof(u32)));

WARNING: line over 80 characters
#356: FILE: sound/soc/sof/hw-spi.c:389:
+		cpu_to_be32_array((__be32 *)hdr->sha256, (const u32 *)hdr->sha256,

WARNING: line over 80 characters
#380: FILE: sound/soc/sof/hw-spi.c:407:
+		dev_warn(sdev->dev, "%s().%d: no IRQ: %d\n", __func__, __LINE__, ret);

WARNING: line over 80 characters
#395: FILE: sound/soc/sof/hw-spi.c:422:
+			dev_err(sdev->dev, "Failed sending FW image: %d\n", ret);

WARNING: line over 80 characters
#409: FILE: sound/soc/sof/hw-spi.c:432:
+		dev_warn(sdev->dev, "%s().%d: no IRQ: %d\n", __func__, __LINE__, ret);

WARNING: line over 80 characters
#433: FILE: sound/soc/sof/hw-spi.c:456:
+		dev_warn(sdev->dev, "%s().%d: no IRQ: %d\n", __func__, __LINE__, ret);

WARNING: DT compatible string "sof,sue-creek" appears un-documented -- check ./linux-sof-driver/Documentation/devicetree/bindings/
#574: FILE: sound/soc/sof/sof-spi-dev.c:162:
+	{ .compatible = "sof,sue-creek", .data = &spi_desc },

WARNING: DT compatible string vendor "sof" appears un-documented -- check ./linux-sof-driver/Documentation/devicetree/bindings/vendor-prefixes.txt
#574: FILE: sound/soc/sof/sof-spi-dev.c:162:
+	{ .compatible = "sof,sue-creek", .data = &spi_desc },

total: 0 errors, 15 warnings, 1 checks, 516 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

./linux-sof-driver/0001-sof-WIP-fix-sending-firmware-over-SPI-communicate-wi.patch has style problems, please review.

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.